12639991

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19843}}^1$

素因数の和:19870

約数の個数: 12

約数和(自身を含む): 15835512

約数和(自身を除く): 3195521

約数列:

[1, 7, 13, 49, 91, 637, 19843, 138901, 257959, 972307, 1805713, 12639991]

約数ペア:

[(1, 12639991), (7, 1805713), (13, 972307), (49, 257959), (91, 138901), (637, 19843)]